Workers including nurses, teachers and allied health staff have already begun low-level industrial action, but with neither side willing to budge on pay, Tasmanian Government coffers will be hit.

The Community and Public Sector Union's Tom Lynch said workers would escalate industrial action until the Government scrapped its 2 per cent wages cap.

Mr Lynch said his union was considering cutting off revenue streams for the Government.

"So areas where the public are billed for services rendered, or where costs are recovered from the Commonwealth," he said.

"Eventually, we'll be moving to stop-work meetings and strike action."

In the past, public sector workers have disrupted government revenue by refusing to collect court fees and other money at Service Tasmania outlets, and by not billing Medicare for services provided in Tasmania.

Mr Lynch said unions had tried to minimise the impacts of industrial action on the community so far.

"That's going to be hard for us to maintain," he said.

Treasurer determined to preserve wage cap

Treasurer Peter Gutwein said he was willing to negotiate on other parts of enterprise bargaining agreements but was not budging on the 2 per cent wage growth cap.

Mr Gutwein said unions were taking an "unreasonable" position.

"To be frank, I think Mr Lynch should stop playing politics and focus on what is a very sensible offer from the Government," he said.

"I'd encourage all public servants to be sensible and responsible here.

"Cutting off their nose to spite their face by limiting revenue is certainly not something that's going to improve the Government's financial position."

Opposition MP Ella Haddad said pressure in the health system was a clear argument for a bigger pay rise for public servants.

"We know that morale is at its lowest in the hospitals, and meanwhile doctors and nurses are still working so hard under increasingly stretched provisions to ensure patient care is not compromised," she said.

"Those people are to be applauded but they are absolutely right in arguing for more than a 2 per cent pay rise."